head to head
Microsoft 365 vs Nextcloud
Nextcloud is the open source alternative to Microsoft 365 — office suite and cloud services. Here is the honest comparison.
Yes — Nextcloud is a viable free replacement for Microsoft 365. Nextcloud is open source under AGPL-3.0, written in PHP, with 36,828 GitHub stars, 5,222 forks and 3,657 open issues; it was last pushed 6 hours ago. Microsoft 365 costs from $6, while self-hosting Nextcloud carries no licence fee — the trade is your operational time instead of a subscription. 1 other open source Microsoft 365 alternative is tracked here, led by LibreOffice at 4,373 stars. Nextcloud ranks #1 of 2 tracked open source Microsoft 365 alternatives by stars. The tracked set, by adoption: LibreOffice (4,373 stars). Replacement criteria on this page: 4 reasons to move to Nextcloud and 3 reasons to stay on Microsoft 365.
choose Nextcloud if
- Your Microsoft 365 bill is growing with seats or usage
- You need your data in a format and server you control
- Your compliance posture requires auditing the code that touches sensitive data
- You have (or can rent) a server and basic Docker comfort
stick with Microsoft 365 if
- You need the polished onboarding and support SLAs of a commercial vendor
- Your team has zero capacity to operate software, even self-hosted-simple
- You depend on a Microsoft 365 integration ecosystem that the OSS alternatives have not replicated
Side by side
| Nextcloud (open source) | Microsoft 365 | |
|---|---|---|
| Price | Free (self-hosted) | $6-$22/user/month |
| License | AGPL-3.0 | Proprietary |
| Source code | Public, auditable | Closed |
| Self-hosting | Yes — nextcloud/server | Cloud only |
| Data ownership | Your server, your format | Vendor's cloud |
| Community | ★ 37K · ⑂ 5.2K | — |
| Built with | PHP | — |
Why people look for a Microsoft 365 alternative
About Nextcloud
Nextcloud is a self hosted cloud collaboration platform built in PHP, licensed under AGPL 3.0. It enables organizations and individuals to store, synchronize, and share files, contacts, calendars, and other data on infrastructure they control, replacing reliance on third party cloud services. The project lives in the open source cloud software ecosystem and serves as a decentralized alternative to proprietary suites like Dropbox, Google Workspace, and Microsoft 365.
read the full Nextcloud overview →
Other open source alternatives to Microsoft 365
last updated nightly · ranking method: github stars, live-tracked
Frequently asked questions
Is Nextcloud a good replacement for Microsoft 365?
Nextcloud is an open source alternative to Microsoft 365 (Office suite and cloud services). It is written in PHP and licensed under AGPL-3.0, with 36,828 GitHub stars.
Is Nextcloud free compared to Microsoft 365?
Yes. Nextcloud is open source — there is no licence fee, and you can self-host it. Microsoft 365 is typically a paid subscription, so the trade-off is licence cost against the operational work of running it yourself.
How do I migrate from Microsoft 365 to Nextcloud?
Migration effort depends on the data formats involved. Check Nextcloud's documentation for import options, and compare the feature table above to confirm the capabilities you depend on are covered before switching.